title: The importance of screening and monitoring: the Standard Days Method and cycle regularity.
mesh_terms: D000328:Adult; D005260:Female; D005300:Fertility Agents, Female / Q000008:administration & dosage*; D006801:Humans; D008597:Menstrual Cycle / Q000187:drug effects / Q000502:physiology*; D008991:Monitoring, Physiologic / Q000379:methods*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D005300:Fertility Agents, Female